Analysis

  • max time kernel
    134s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    02-11-2020 09:10

General

  • Target

    dda612840ea2c14820710be560ad687c.exe

  • Size

    668KB

  • MD5

    dda612840ea2c14820710be560ad687c

  • SHA1

    225eab5fecd69281a727d2910ffca2f65341d776

  • SHA256

    fb89126a584d7c5f4051ea49ee0a03f18b3f08a9c9c165088cee1ceeb482e75d

  • SHA512

    71d17ced9bed86ecb4935d7c31361bc94f31a419f98caba8afa31a61c5dfb2aa6a769091ccf1b44d0141ee7b7ff4d01aa7601e4113f389c443a81d6e161cbe69

Malware Config

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dda612840ea2c14820710be560ad687c.exe
    "C:\Users\Admin\AppData\Local\Temp\dda612840ea2c14820710be560ad687c.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exe
      bestof.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1212
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        3⤵
          PID:980
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:676
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1756
            • C:\Windows\SysWOW64\PING.EXE
              ping 127.0.0.1 -n 3
              5⤵
              • Runs ping.exe
              PID:916
      • C:\Users\Admin\AppData\Roaming\gfersesurity\bestofd.exe
        bestofd.exe
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1132
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:812
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 3
            4⤵
            • Runs ping.exe
            PID:1420

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Install Root Certificate

    1
    T1130

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    1
    T1082

    Remote System Discovery

    1
    T1018

    Collection

    Data from Local System

    1
    T1005

    Command and Control

    Web Service

    1
    T1102

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exe
      MD5

      b77a1d58626a5d4a77202afbf717accb

      SHA1

      1a37bf11e2b75384785d05780fe17fe1167bfbb1

      SHA256

      a0a1952f947eaea5f54da2c343da0dc0ef5cd7bc58fe27f1dbf4e7199e757a13

      SHA512

      d12789afcdf0b6dc4dfd5c944c56466c3305b1f87670a038401e22a27ee8980b11a6039e73c4729c731dfd241fdb84c7c850c6ee2cd04bdfac6d5f5b2c8fff26

    • C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exe
      MD5

      b77a1d58626a5d4a77202afbf717accb

      SHA1

      1a37bf11e2b75384785d05780fe17fe1167bfbb1

      SHA256

      a0a1952f947eaea5f54da2c343da0dc0ef5cd7bc58fe27f1dbf4e7199e757a13

      SHA512

      d12789afcdf0b6dc4dfd5c944c56466c3305b1f87670a038401e22a27ee8980b11a6039e73c4729c731dfd241fdb84c7c850c6ee2cd04bdfac6d5f5b2c8fff26

    • C:\Users\Admin\AppData\Roaming\gfersesurity\bestofd.exe
      MD5

      72131adb0e2315281aae445db11e09a2

      SHA1

      712ca2ebaa7d9bc9bbe18f7843954cfb0d22b08e

      SHA256

      9ea7a66f0c3dc13ddfc6f05d95049dd7f641053a380578a12013db9f72367f65

      SHA512

      bbc68fa0c586aaa7227da59848407672e7629e8f1289384add8638c21bab69d41495bcfc7881446b527e5aa4db14e1babc4f71dfee32b69705e6d3b64bf46a22

    • \Users\Admin\AppData\Roaming\gfersesurity\bestof.exe
      MD5

      b77a1d58626a5d4a77202afbf717accb

      SHA1

      1a37bf11e2b75384785d05780fe17fe1167bfbb1

      SHA256

      a0a1952f947eaea5f54da2c343da0dc0ef5cd7bc58fe27f1dbf4e7199e757a13

      SHA512

      d12789afcdf0b6dc4dfd5c944c56466c3305b1f87670a038401e22a27ee8980b11a6039e73c4729c731dfd241fdb84c7c850c6ee2cd04bdfac6d5f5b2c8fff26

    • \Users\Admin\AppData\Roaming\gfersesurity\bestofd.exe
      MD5

      72131adb0e2315281aae445db11e09a2

      SHA1

      712ca2ebaa7d9bc9bbe18f7843954cfb0d22b08e

      SHA256

      9ea7a66f0c3dc13ddfc6f05d95049dd7f641053a380578a12013db9f72367f65

      SHA512

      bbc68fa0c586aaa7227da59848407672e7629e8f1289384add8638c21bab69d41495bcfc7881446b527e5aa4db14e1babc4f71dfee32b69705e6d3b64bf46a22

    • memory/676-13-0x0000000000400000-0x0000000000436000-memory.dmp
      Filesize

      216KB

    • memory/676-19-0x0000000000340000-0x0000000000362000-memory.dmp
      Filesize

      136KB

    • memory/676-18-0x00000000002E0000-0x0000000000304000-memory.dmp
      Filesize

      144KB

    • memory/676-17-0x0000000074BE0000-0x00000000752CE000-memory.dmp
      Filesize

      6.9MB

    • memory/676-14-0x000000000040CD2F-mapping.dmp
    • memory/676-15-0x0000000000400000-0x0000000000436000-memory.dmp
      Filesize

      216KB

    • memory/676-16-0x0000000000B50000-0x0000000000B61000-memory.dmp
      Filesize

      68KB

    • memory/812-28-0x0000000000000000-mapping.dmp
    • memory/916-27-0x0000000000000000-mapping.dmp
    • memory/1096-0-0x00000000024D4000-0x00000000024E5000-memory.dmp
      Filesize

      68KB

    • memory/1096-1-0x00000000027C0000-0x00000000027D1000-memory.dmp
      Filesize

      68KB

    • memory/1132-22-0x0000000003E10000-0x0000000003E21000-memory.dmp
      Filesize

      68KB

    • memory/1132-11-0x0000000000000000-mapping.dmp
    • memory/1132-20-0x0000000002439000-0x000000000243A000-memory.dmp
      Filesize

      4KB

    • memory/1132-21-0x0000000003C70000-0x0000000003C81000-memory.dmp
      Filesize

      68KB

    • memory/1132-23-0x0000000074BE0000-0x00000000752CE000-memory.dmp
      Filesize

      6.9MB

    • memory/1132-24-0x00000000003B0000-0x00000000003D4000-memory.dmp
      Filesize

      144KB

    • memory/1132-25-0x00000000026A0000-0x00000000026C2000-memory.dmp
      Filesize

      136KB

    • memory/1212-8-0x0000000001120000-0x0000000001121000-memory.dmp
      Filesize

      4KB

    • memory/1212-7-0x00000000745C0000-0x0000000074CAE000-memory.dmp
      Filesize

      6.9MB

    • memory/1212-4-0x0000000000000000-mapping.dmp
    • memory/1420-30-0x0000000000000000-mapping.dmp
    • memory/1636-2-0x000007FEF6930000-0x000007FEF6BAA000-memory.dmp
      Filesize

      2.5MB

    • memory/1756-26-0x0000000000000000-mapping.dmp